'Frost Quakes' Cause Explosive Sounds Overnight

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Loud booms reported across the state are the result of cryoseisms, or “ice quakes.” The phenomenon occurred when the ground rapidly freezes and cracks develop in the ground, leading to an explosive sound. (Published Monday, Jan 21, 2019 ) Loud booms reported across the state are the result of cryoseisms, or “ice quakes.” The... See More

Loud booms reported across the state are the result of cryoseisms, or “ice quakes.” The phenomenon occurred when the ground rapidly freezes and cracks develop in the ground, leading to an explosive sound.

(Published Monday, Jan 21, 2019)

Did you hear a big boom sometime overnight? You’re not alone.

Chief Meteorologist Ryan Hanrahan said those loud noises, which have been reported across the state, are the result of cryoseisms, or "ice" or "frost quakes.” The phenomenon occurs when the ground rapidly freezes and cracks develop in the ground, leading to an explosive sound.